Cassiterite? Tin?

[treasurewell]

Found these in the desert, the area has a lot of schist, graphite, tin, mica, etc. I was curious as to what these are. Anybody got any ideas? Cassiterite?

 

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[Kray Gelder]

Hey Branwell, are you referring to the lighter dendrite-like crystals? If so, that is not the crystal form for cassiterite, from my limited knowledge. Did you taste it? They could be some form of salt. Just guessing here.

 

[treasurewell]

It doesn't taste like salt, but I found this on the floor of an alkaline desert, with miles and miles of huge salt flats! So you may be on to something here